Calk-sharpening machine



R. L. SMITH.

CALK SHARPENING MACHINE. APPuq/mou men MAY 4, 1917.

,335 354 Patented M31330, 1920.

Cir

ROBERT-L. SMITH, OAKBAY, -NEW I BI R UNSW-I-CK, CANADA.

cALK-sHAurnNI-ne meme.

Application filed Maye, 1917. Serial No. 166,359.

To all whom it may concern:

Be it known that I, Bonnier L. SMrrrI, a subject of the Kingof Great Britain, residing at Oak Bay, inthe countyofQharlotte, New Brunswick, Canada, have invehtedcertain new and useful Improvements in Call:- Sharpening Machines; and I do herebydeclare the following to be a full, clear, and exact description. ofthe invention, such as will enable others skilled inthe art to which it appertains to make anduse the same.

This invention relates toimprovements in horseshoe call: sharpening machines of the type adapted to be employed for sharpening the calks without necessitating thelrem oval of the calks from the horseshoe, and an object of the invention is the provision of a machine of this type formed of a Very few parts with the said parts arranged in a convenient and compact manner, and including a novel form of handle by means of which the operator can easily guide the machine during the ca-lk sharpening operation.

Other ob ects will appear and be better understood from that embodiment of my invention of which the following is a specification, reference being had to the accompanying drawing forming a part thereof, in which:

Figure 1 is a side elevation of the calk sharpening machine, showing the same in operative position on a horseshoe for sharpening the outer side of the sharpened end of a heel calk.

-2 is a front elevation of the ealk sharpening machine detached from operative position,

Fig. 3 is a vertical sectional view taken through the calk sharpening machine, showing the same mounted on the horseshoe for sharpening the inner face of the sharpened edge of one of the heel calks.

Referring to the drawing in detail, the calk sharpening machine is designated, as an entirety, by the numeral 1 and comprises a horizontally disposed rectangular frame 2, having side bars 33 and end bars 1-4. A vertically disposed rectangular shaped frame 5 extendsupwardlyfrom the frame 2 and is disposed at a central point on the frame 2 and includes the side bars 6-6, the lower ends of which are integrally connected to the respective side bars 33 of the frame 2, and an upper end bar 7 that connects the upper ends of the side bars (36. A cylindrical shaped grinding elea shaft ment, formed of emery, designated 8, is interposed between the lower ends of the sides 6 ti ofthe vertical frame?) and is arranged transversely of the frame 2 and spaceda slight distance above the frame 2. The opposite ends of the grinding element are pro vided with trunnions, designated, respectively, "bythe numerals 9 and 10, the trunnions being rotatably mounted in openings in the sides 6 -6 of the frame 5,"and tlie .free end. of the trunnion 10 extends outward beyond the adjacent side of "the frame and has a relatively small gear wheel 11 keyed thereto. ,Thegear wheel 11 meshes with a relatively large gear wheel 12, which is keyedlto one end of 13 that extends transversely through the frame 5 at a point spaced above the grinding element 8 and the opposite ends thereof are journaled in the sides 6-6 of the frame 5. A manipulating handle 4 is disposed in spaced relation to the outer side of the gear 12 and is operativcly connected to the adjacent end of the shaft 13, and when rotated will effect, through the intermeshing gears 11 and 12, rotation of the grinding element 8. An arcuate shaped handle 15 has one end connected, in any suitable manner, to the'upper end bar 7 of the frame 5 and the other end of the handle 15 has connection with one of the end bars 4; of the lower frame 2, and a protector plate 16 underlies the grinding element 8 in spaced relation thereto and extends transversely of the frame 2.

In use, the foot of the horse, with the shoe attached, is held between the knees of the operator and the calk to be sharpened is first inserted between the grinding element 8 and that end bar of the frame 2 to which the lower end of the handle 15 is attached, the handle 15 being held by one hand of the operator and the entire machine is then moved in the direction of the calk so as to engage the inner side of the operative edge of the calk with the adjacent side of the grinding element 8. The operator then catches hold of the handle 14 with the other hand and rotates the same so as to effect rotation of the grinding element 8, resulting in the inner side of the operative edge of the calk being ground. After the mentioned inner side of the operative edge of the calk has been ground sufficiently, the machine is positioned so that the calk will extend between the inner end bar 4 of the frame 2 pe i 9 t t Patented Main-30,1920. I

and the grinding element 8, and the machine is moved in the direction where engagement between the grinding element 8 and the outer side of the operative edge of the calk will be had. The grinding element is then rotated so as to efi'ect the grinding of the outer side of the operative edge of the calk.

The protector plate 16 rests on the upper side of the horseshoe, during the calk sharpening operation, as shown more particularly in Fig. 3 of the drawings, and prevents the grinding element 8 from engaging the shoe, thereby preventing grinding of the shoe. I

It is evident that various changes might be resorted to in the form, construction and arrangement of the several parts without departing from the spirit and scope of the invention as claimed.

Having thus described my invention what I claim as new, is: p

1. A horseshoe calk sharpening machine including a rectangular base, an upright frame carried by the base,a rotary sharpening element carried by the frame, and a transversely extending protector plate secured at its ends to the sides of*said base and cooperating with said base to position the horseshoe calks.

2. A horseshoe calk sharpening machine including a base, an upright frame secured to the base intermediate its ends thereof, a rotary sharpening element carried by the upright frame, a pinion having connection with said sharpening element, a gear rotatably carried by said frame, and meshing with said pinion, a crank handle having connection with said gear, a transversely extending protector plate secured to said base, and a ongitudinally curved handle secured at its ends to said base and the upper portion of said frame, intermediate the sides of the same.

In testimony whereof I aflix my signature in presence of two witnesses.

ROBERT L. SMITH.

Witnesses:

C. W. VRooM, NORMAN G. MACDONALD. 

